Gate
Butterfly
Globe
None of these
✅ The correct answer is option A.
Engineering
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2392. Neutral atmosphere is maintained in a/an __________ furnace.
Cold rolled steel coil annealing
Open hearth
Soaking pit
Walking beam reheating
✅ The correct answer is option A.
2393. The heating capacity of continuous reheating furnace depends upon the
Hearth area and furnace temperature
Emissivity of the stock
Ratio of wall surface to stock surface
All of the above
✅ The correct answer is option D.
2394. Ingress of cold air in the furnaces through cracks, charging doors, openings etc.
Reduces the flue gas temperature and makes the furnace atmosphere oxidising
Increases the load on the induced draft fan
Reduces the furnace draught
All of the above
✅ The correct answer is option D.
2395. Which furnace employs an I.D. fan for the removal of flue gases from the furnace?
Coke oven
Blast furnace stoves
Beehive coke oven
High pressure boiler
✅ The correct answer is option D.
2396. Acid dew point temperature (ADT) of a flue gas produced by the combustion of a fuel containing 1% sulphur may be about __________ °C.
80
130
180
250
✅ The correct answer is option B.
2397. Temperature of a furnace fired with low calorific value fuel gas (i.e. lean gas) can be increased by
Preheating the combustion air
Oxygen enrichment of combustion air
Preheating the fuel gas
All of the above
✅ The correct answer is option D.
2398. The resistance furnace produces heat by the
Electric arc struck between electrodes and the charge
Flow of current through a heating element
Combination of induced current and skin effect
None of these
✅ The correct answer is option B.
2399. Size of the combustion chamber of a furnace depends upon the
Heat release rate of the fuel
Preheat temperature of fuel & air
Method of mixing the fuel & air
All of the above
✅ The correct answer is option D.
2400. Which of the following is a heat treatment furnace?
Muffle furnace
Annealing furnace
Reheating furnace
Rotary kiln
✅ The correct answer is option B.